Link mechanism with wire harness and wire harness

Abstract

A link mechanism (10) comprises a vehicle body–side arm (20), a door-side arm (30), and a pair of rotary shafts (40). A harness body (120) has a bridging part (121) that passes between respective pairs of principal walls (22, 32) and respective pairs of support walls (24, 34) of the vehicle body–side arm (20) and the door-side arm (30). A wire harness (110) comprises a vehicle body–side harness support member (130) that has a body part (131) that vertically raises a vehicle body–side end part of the bridging part and supports the vehicle body–side end part from below and a door-side harness support member (140) that has a body part (141) that vertically raises a door-side end part of the bridging part and supports the door-side end part from below. The vehicle body–side harness support member has a support part (135) that protrudes from the body part between the pair of rotary shafts, vertically raises the bridging part to a position at which contact between the bridging part and an upper end part of the lower rotary shaft is avoided, and supports the bridging part from below.

Description

Link mechanism with wire harness and wire harness

[0001] The present invention relates to a link mechanism with a wire harness and a wire harness.

[0002] Conventionally, vehicles such as automobiles are equipped with a power supply device for a sliding door that electrically connects a power source (such as a secondary battery) on the vehicle body side to a switch or electrical components on the sliding door side. In this power supply device for a sliding door, the wire harness is responsible for the electrical connection. This wire harness includes a harness body provided with a crossing portion that crosses between the vehicle body and the sliding door. In this wire harness, the crossing portion is routed along a plurality of arms of a link mechanism that also crosses between the vehicle body and the sliding door. This type of wire harness is disclosed in, for example, Patent Document 1 below.

[0003] Japanese Patent Application Laid-Open No. 2023-124959

[0004] By passing the crossing portion through the arm in the wire harness, the crossing portion can be protected from the surroundings and the appearance can be improved between the vehicle body and the sliding door. However, in this wire harness, interference between the crossing portion and the rotation axis between the plurality of arms appears as a concern when the crossing portion is passed through the arm.

[0005] Therefore, an object of the present invention is to provide a link mechanism with a wire harness and a wire harness that can suppress interference between the crossing portion and the rotation axis of the arm.

[0006] The wire harness link mechanism according to the present invention comprises a link mechanism for reciprocating a sliding door in the sliding direction relative to the vehicle body, and a wire harness provided with a harness body for electrically connecting a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, wherein the link mechanism comprises a vehicle body side arm installed on the vehicle body side, a door side arm installed on the sliding door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle body side arm and the door side arm, wherein the vehicle body side arm and the door side arm are each provided with an arm body having a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end, wherein one of the rotating shafts rotatably connects the respective vertically upper support walls of the vehicle body side arm and the door side arm around a vertical axis, and the other rotating shaft connects the respective vertically lower front support walls of the vehicle body side arm and the door side arm The support walls are connected so as to be rotatable around a vertical axis, and the harness body has a connecting portion that is passed between the vehicle body and the sliding door through the pair of main walls of the vehicle body side arm and the pair of support walls of the door side arm, and the wire harness is fixed inside the arm body of the vehicle body side arm and has a body portion that is provided to lift the vehicle body side end of the connecting portion vertically upward and support it from vertically downward, and the door side arm The vehicle body harness support member is provided with a door-side harness support member that is fixed inside the main body and has a main body portion that lifts the door-side end of the connecting portion vertically upward and supports it from vertically downward, wherein at least one of the vehicle body-side harness support member and the door-side harness support member is provided with a support portion that protrudes from the main body portion toward the space between the pair of rotating shafts and lifts the connecting portion vertically upward to a position that avoids contact between the connecting portion and the vertically upward end of the other rotating shaft and supports it from vertically downward.

[0007] The wire harness according to the present invention is a wiring component for electrically connecting a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, and comprises a harness body having a connecting portion that is passed between the vehicle body and the sliding door along a link mechanism that moves the sliding door back and forth in the sliding direction relative to the vehicle body, a vehicle body side harness support member having a main body portion that lifts the vehicle body side end of the connecting portion vertically upward and supports it from vertically below, and a portion that lifts the door side end of the connecting portion vertically upward and supports it from vertically below The link mechanism comprises a door-side harness support member having a main body portion for support, and the link mechanism comprises a vehicle-side arm installed on the vehicle body side, a door-side arm installed on the sliding door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle-side arm and the door-side arm, and the vehicle-side arm and the door-side arm each have an arm body having a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end, The structure is provided such that one of the rotational shafts rotatably connects the vertically upward support walls of the vehicle body side arm and the door side arm around a vertical axis, and the other rotational shaft rotatably connects the vertically downward support walls of the vehicle body side arm and the door side arm around a vertical axis, and the connecting portion passes between the pair of main walls and the pair of support walls of the vehicle body side arm and the door side arm, between the vehicle body and the sliding door. The harness is connected, and the vehicle body side harness support member is fixed inside the arm body of the vehicle body side arm, and the door side harness support member is fixed inside the arm body of the door side arm, and at least one of the vehicle body side harness support member and the door side harness support member is provided with a support portion that protrudes from the main body portion toward the space between the pair of rotating shafts, and supports the connecting portion from vertically below by lifting it vertically upward to a position that avoids contact between the connecting portion and the vertically upper end of the other rotating shaft.

[0008] The wire harness link mechanism and wire harness according to the present invention support the connecting portion at a position that avoids contact between the connecting portion and the end of the other rotation axis (vertically downward rotation axis), provided on at least one of the vehicle body side harness support member and the door side harness support member. Therefore, interference between the connecting portion and the other rotation axis (vertically downward rotation axis) can be suppressed at any timing, whether the door is fully closed, fully open, or during door opening and closing.

[0009] Figure 1 is a perspective view showing the link mechanism with wire harness and the wire harness in the fully closed position. Figure 2 is a side view showing the link mechanism with wire harness and the wire harness in the fully closed position. Figure 3 is a magnified view of the area around the rotation axis of the link mechanism with wire harness and the wire harness in the fully closed position, viewed from the side. Figure 4 is a top view showing the link mechanism with wire harness and the wire harness in the fully closed position. Figure 5 is a perspective view showing the link mechanism with wire harness and the wire harness in the fully open position. Figure 6 is a plan view of the link mechanism with wire harness and the wire harness in the fully open position, viewed from the front of the vehicle. Figure 7 is a plan view of the link mechanism with wire harness and the wire harness in the fully open position, viewed from the rear of the vehicle. Figure 8 is a top view showing the link mechanism with wire harness and the wire harness in the fully open position. Figure 9 is a perspective view showing the harness support member on the vehicle body side. Figure 10 is a perspective view showing the harness support member on the door side. Figure 11 is a perspective view showing a modified link mechanism with a wire harness and a modified wire harness in the fully closed position of the door. Figure 12 is a perspective view showing a modified harness support member on the vehicle body side. Figure 13 is a perspective view showing a modified harness support member on the door side.

[0010] Embodiments of the link mechanism with wire harness and the wire harness according to the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to these embodiments.

[0011] [Embodiment] One embodiment of the link mechanism with wire harness and wire harness according to the present invention will be described with reference to Figures 1 to 13.

[0012] Reference numeral 1 in Figures 1 to 8 indicates the link mechanism with wire harness according to this embodiment.

[0013] For example, in vehicles such as automobiles, there are known vehicles equipped with a sliding door 510 that can slide relative to the vehicle body (reciprocating movement in the sliding direction) (Figure 1). In this vehicle, a link mechanism 10 is provided to move the sliding door 510 back and forth relative to the vehicle body in the sliding direction, and a wire harness 110 routed along this link mechanism 10 electrically connects the vehicle body side and the sliding door 510 side (Figures 1 to 8). The link mechanism with wire harness 1 is provided with the link mechanism 10 and the wire harness 110 assembled together.

[0014] The link mechanism 10 connects the vehicle body to, for example, the sliding door 510 on the side of the vehicle, and opens and closes the sliding door 510 between the fully closed position (Figures 1 to 4) and the fully open position (Figures 5 to 8) relative to the vehicle body.

[0015] This link mechanism 10 comprises a vehicle-side arm 20 installed on the vehicle body side, a door-side arm 30 installed on the sliding door 510 side, and a pair of coaxial rotating shafts 40 that rotatably connect one end each of the vehicle-side arm 20 and the door-side arm 30 (Figures 1 to 8). In this link mechanism 10, the vehicle-side arm 20, the door-side arm 30, and the rotating shafts 40 are made of metal materials such as steel or aluminum alloy.

[0016] The vehicle body side arm 20 and the door side arm 30 are each provided with arm bodies 21 and 31 (Figures 1 to 8).

[0017] Each arm body 21, 31 has a pair of main walls 22, 32 that are positioned opposite each other with a vertical gap between them (Figures 1 to 8). The main walls 22, 32 shown here each have a horizontal surface and are formed in the shape of a rectangular flat plate that extends between the vehicle body and the sliding door 510. Each arm body 21, 31 has a closing wall 23, 33 that connects the edges of the pair of main walls 22, 32 along the extending direction and closes the opening between those edges (Figure 1).

[0018] Furthermore, the vehicle body side arm 20 and the door side arm 30 are each provided with a pair of support walls 24, 34 that are positioned opposite each other with a vertical gap between them at one end (Figures 1 to 5, 7 and 8).

[0019] The vehicle-side arm 20 shown here is provided with a protruding piece that projects in a single-piece shape from one end of each of the pair of main walls 22 on the same plane. In the vehicle-side arm 20, each of these protruding pieces is used as a support wall 24 (Figures 1 to 5 and 8).

[0020] Furthermore, the door-side arm 30 shown here includes a support arm member 35 which is molded as a separate component from the arm body 31, and the arm body 31 and the support arm member 35 are joined together, for example by welding, to form a single component (Figures 1 to 8).

[0021] The support arm member 35 has a pair of main walls 36 that are positioned opposite each other with a gap in the vertical direction (Figures 1 to 8). These main walls 36 are formed in the shape of an L-shaped plate with a horizontal surface. The support arm member 35 also has a closing wall 37 that connects the edges of the L-shaped long pieces of the pair of main walls 36 along the extending direction and closes the opening between the edges (Figure 1).

[0022] In this support arm member 35, the arm body 31 is not placed between the L-shaped short pieces of each main wall 36, but rather the L-shaped long pieces of each main wall 36 are joined to the respective main walls 32 of the arm body 31. In this way, in this support arm member 35, each of the L-shaped short pieces is used as a support wall 24. Here, with the extending direction of the L-shaped long piece aligned with the extending direction of the main wall 32, the L-shaped long piece is overlapped and joined to the outer wall surface of the main wall 32.

[0023] In the link mechanism 10, the vertically upward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 are superimposed, and the vertically downward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 are superimposed. Here, the outer surface of each support wall 34 is superimposed (Figures 2 to 5, 7 and 8).

[0024] One rotating shaft 40 connects the vertically upward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 so that they can rotate around a vertical axis. The other rotating shaft 40 connects the vertically downward support walls 24 and 34 of the vehicle body side arm 20 and the door side arm 30 so that they can rotate around a vertical axis.

[0025] Each of the support walls 24 and 34 has a circular through-hole (not shown) that serves as a bearing for the rotating shaft 40. For example, a rivet member is used for the rotating shaft 40 here. The rotating shaft 40 has disc-shaped locking portions 41 with a diameter larger than the through-holes in the overlapping support walls 24 and 34, which are provided at both ends by riveting or the like (Figures 1 to 8). In this rotating shaft 40, one locking portion 41 is positioned facing the outer wall surface of the support wall 24 at one end in the axial direction, and the other locking portion 41 is positioned facing the inner wall surface of the support wall 34 at the other end in the axial direction, thereby connecting the overlapping support walls 24 and 34 so that they can rotate freely around a vertical axis.

[0026] The vehicle body side arm 20 and the door side arm 30 are positioned such that when the sliding door 510 is in the fully closed position, the extending direction of their respective pair of main walls 22 and 32 is aligned with the sliding direction of the sliding door 510 (Figures 1 to 4).

[0027] Here, the link mechanism 10 may include a vehicle-side arm 20 as the arm positioned closest to the vehicle body, or it may have another arm closer to the vehicle body than the vehicle-side arm 20. Also, the link mechanism 10 may include a door-side arm 30 as the arm positioned closest to the sliding door 510, or it may have another arm closer to the sliding door 510 than the door-side arm 30.

[0028] The vehicle body-side arm 20 shown here is positioned as close to the vehicle body as possible and fixed to the vehicle body. The link mechanism 10 shown here comprises, in order from the vehicle body side to the sliding door 510 side, the vehicle body-side arm 20 as the first arm, the door-side arm 30 as the second arm, and the third arm 50 (Figure 5). This link mechanism 10 also includes an arm support member 60 fixed to the sliding door 510 (Figure 5).

[0029] In this link mechanism 10, one end of the third arm 50 is rotatably connected to the arm support member 60 via a rotating shaft 71 (Figure 5). The rotating shaft 71 rotatably connects the arm support member 60 and one end of the third arm 50 around a vertical axis. In addition, in this link mechanism 10, the other ends of the door-side arm 30 and the third arm 50 are rotatably connected via a rotating shaft 72 (Figure 5). The rotating shaft 72 rotatably connects the other ends of the door-side arm 30 and the third arm 50 around a vertical axis.

[0030] The wire harness 110 is provided with a harness body 120, which serves as a wiring component for electrically connecting a first electrical connection target 550 installed on the vehicle body and a second electrical connection target 560 installed on the sliding door 510 (Figures 1 to 8). In this harness body 120, multiple electric wires (not shown) are bundled together.

[0031] The first electrical connection target 550 refers to items installed on the vehicle body side, such as a power source (secondary battery, etc.) and electrical components. For example, these vehicle body-side electrical components refer to audio equipment related to the speaker of the sliding door 510, or a drive unit that operates the power seat. On the other hand, the second electrical connection target 560 refers to items installed on the sliding door 510, such as electrical components and switches. For example, these electrical components of the sliding door 510 refer to a drive unit that operates the power window, or a speaker. Also, the switches of the sliding door 510 refer to switches for operating the power window, switches for operating the power seat, etc.

[0032] The harness body 120 has a connecting section 121 that runs along the link mechanism 10 between the vehicle body and the sliding door 510 (Figures 1 to 8). For example, the connecting section 121 is provided with an exterior member (not shown) such as a corrugated tube through which multiple electric wires pass inward or a resin tape wrapped around multiple electric wires.

[0033] Furthermore, in this harness body 120, one end of the connecting portion 121 on the vehicle body side (hereinafter referred to as the "vehicle body side end") has another end on the vehicle body side beyond it. And in this harness body 120, the other end of the connecting portion 121 on the sliding door 510 side (hereinafter referred to as the "door side end") has another end on the sliding door 510 side beyond it. Therefore, the harness body 120 has a vehicle body side routing portion 122 routed at the end of the vehicle body side end of the connecting portion 121, and a door side routing portion 123 routed at the end of the door side end of the connecting portion 121 (Figures 1, 2, 4 to 6 and 8).

[0034] The connecting section 121 is passed between the vehicle body and the sliding door 510, through the inside of the vehicle body side arm 20 and the door side arm 30 (Figures 1 to 6 and 8). The vehicle body side wiring section 122 is pulled outward from the other end of the vehicle body side arm 20 (Figures 1, 2, 4 to 6 and 8). The door side wiring section 123 is pulled outward from in front of the rotating shaft 72 at the other end of the door side arm 30 (Figures 1, 2, 4 to 6 and 8). A notch 32a is formed in the main wall 32 on the other end side of the arm body 31 in front of the rotating shaft 72 (Figures 1, 2, 4 to 6 and 8). The door side wiring section 123 is pulled outward from this notch 32a.

[0035] Specifically, the connecting section 121 is stretched between the vehicle body and the sliding door 510 through the gaps between the pair of main walls 22, 32 and the pair of support walls 24, 34 in the vehicle body side arm 20 and the door side arm 30, respectively. The wire harness 110 includes a vehicle body side harness support member 130 and a door side harness support member 140 that support this connecting section 121 inside the vehicle body side arm 20 and the door side arm 30, respectively (Figures 1, 2 and 4 to 10). The vehicle body side harness support member 130 and the door side harness support member 140 are molded from, for example, a synthetic resin material.

[0036] The vehicle-side harness support member 130 is fixed inside the arm body 21 of the vehicle-side arm 20. This vehicle-side harness support member 130 is fixed to the arm body 21 of the vehicle-side arm 20 using, for example, a fixing member such as a screw.

[0037] The vehicle body-side harness support member 130 is provided with a main body portion 131 that lifts the vehicle body-side end of the connecting portion 121 vertically upward and supports it from vertically downward (Figures 2, 3, and 9). The harness body 120 is inserted through the main body portion 131 shown here. Therefore, the main body portion 131 causes the connecting portion 121, whose vehicle body-side end is supported, to be pulled out from inside the arm body 21 toward one end of the vehicle body-side arm 20. In addition, the main body portion 131 causes the vehicle body-side cable routing portion 122 to be pulled out from inside the arm body 21 toward the other end of the vehicle body-side arm 20.

[0038] For example, the connecting section 121 is equipped with a corrugated tube as an exterior member, which has a bellows section in which annular recesses and annular protrusions are arranged alternately in the axial direction (not shown). The main body 131 shown here is provided with a fitting protrusion 131a that fits concentrically into the annular recess of the corrugated tube, and a fitting recess 131b that fits concentrically into the annular protrusion of the corrugated tube (Figure 9). The fitting protrusion 131a is formed in a semi-circular shape that fits concentrically into the annular recess of the corrugated tube to support the bellows section from vertically below. The fitting recess 131b is also formed in a semi-circular shape that fits concentrically into the annular protrusion of the corrugated tube to support the bellows section from vertically below. In the main body 131, the corrugated tube at the vehicle body side end of the connecting section 121 is fitted into the fitting protrusion 131a and the fitting recess 131b to support the vehicle body side end from below. The vehicle body-side harness support member 130 can restrict the axial position of the connecting portion 121 inside the vehicle body-side arm 20 through the fitting projection 131a and fitting recess 131b.

[0039] After being pulled out from the main body 131, the connecting portion 121 is passed through the space between the pair of support walls 24 and 34 on the vehicle body side arm 20 and the door side arm 30, respectively, and into the door side arm 30.

[0040] Furthermore, the vehicle-side harness support member 130 is provided with protrusions 132 that project vertically upward and vertically downward from the main body portion 131 (Figures 2, 3, and 9). The vertically upward protrusion 132 extends until it contacts the vertically upward main wall 22 of the vehicle-side arm 20. The vertically downward protrusion 132 extends until it contacts the vertically downward main wall 22 of the vehicle-side arm 20. Thus, the vehicle-side harness support member 130 is held between its pair of main walls 22.

[0041] Furthermore, the door-side harness support member 140 is fixed inside the arm body 31 of the door-side arm 30. This door-side harness support member 140 is fixed to the arm body 31 of the door-side arm 30 using, for example, a fixing member such as a screw.

[0042] The door-side harness support member 140 is provided with a main body portion 141 that lifts the door-side end of the connecting portion 121 vertically upward and supports it from vertically below (Figures 2 and 10). The main body portion 131 shown here allows the harness body 120 to be inserted through it. Therefore, in this main body portion 141, the connecting portion 121, whose door-side end is supported, is pulled out from inside the arm body 31 toward one end of the door-side arm 30. In other words, the connecting portion 121, which has been routed from the vehicle body side arm 20, passes between the pair of support walls 24 and 34, and then enters the main body portion 141 of the door-side harness support member 140 by passing inside the door-side arm 30. Furthermore, in this main body portion 141, the door-side routing portion 123 is pulled out from inside the arm body 31 toward the other end of the door-side arm 30.

[0043] For example, when the crossing portion 121 includes a corrugated tube as an exterior member, the main body portion 141 shown here is provided with a fitting convex portion 141a that fits concentrically into the annular concave portion of the corrugated tube, and a fitting concave portion 141b that fits concentrically into the annular convex portion of the corrugated tube (FIG. 10). The fitting convex portion 141a is formed in a semi-arc shape that fits concentrically into the annular concave portion of the corrugated tube and supports the bellows portion from vertically below. Further, the fitting concave portion 141b is formed in a semi-arc shape that fits concentrically into the annular convex portion of the corrugated tube and supports the bellows portion from vertically below. In the main body portion 141, the corrugated tube at the door-side end of the crossing portion 121 is fitted into the fitting convex portion 141a and the fitting concave portion 141b to support the door-side end from below. The door-side harness support member 140 can regulate the axial position of the crossing portion 121 inside the door-side arm 30 by the fitting convex portion 141a and the fitting concave portion 141b.

[0044] The door-side harness support member 140 shown here is disposed closer to the other end (i.e., the rotation axis 72 side) inside the door-side arm 30. Here, the door-side harness support member 140 is disposed in front of the notch portion 32a (i.e., on the one-end side of the door-side arm 30 closer to the door than the notch portion 32a). Therefore, after being drawn out from the main body portion 141, the door-side wiring portion 123 is drawn out from the notch portion 32a to the outside of the door-side arm 30.

[0045] Incidentally, when the sliding door 510 is opened and closed between the fully closed position and the fully open position of the door, the crossing portion 121 passes between the pair of rotation shafts 40 at least at any one of the timings of the fully closed position, the fully open position, and during door opening and closing. Therefore, the crossing portion 121 is wired so as to pass through a location away from each of the rotation shafts 40 between the pair of rotation shafts 40 between the pair of support walls 24 and 34.

[0046] However, the bridging portion 121 may sag due to its own weight, and when passing between the pair of rotating shafts 40, it may interfere with, for example, getting caught on the vertically upper end portion of the other rotating shaft 40 (that is, the locking portion 41 (hereinafter referred to as "locking portion 41A") vertically above the rotating shaft 40A (hereinafter referred to as "rotating shaft 40A") of the vertically lower rotating shaft 40).

[0047] Therefore, in the link mechanism 1 with a wire harness, in order to avoid interference between the bridging portion 121 and the rotating shaft 40A, a support portion for supporting the bridging portion 121 from below vertically is provided on at least one of the vehicle body side harness support member 130 and the door side harness support member 140. The support portion vertically lifts the bridging portion 121 to a position that avoids contact with the locking portion 41A of the bridging portion 121 and the rotating shaft 40A and supports it from below vertically.

[0048] In this example, the vehicle body side harness support member 130 with the support portion 135 (hereinafter referred to as "vehicle body side harness support member 130A") and the door side harness support member 140 without a support portion (hereinafter referred to as "door side harness support member 140A") are combined.

[0049] The support portion 135 protrudes from the main body portion 131 of the vehicle body side harness support member 130A toward the space between the pair of rotating shafts 40 (FIGS. 1 to 4, FIGS. 8 and 9). That is, the support portion 135 protrudes from the main body portion 131 toward vertically above the locking portion 41A of the rotating shaft 40A. And even if the bridging portion 121 that has jumped out from itself and lost the support from below vertically due to its own weight sags between the pair of rotating shafts 40 inside the vehicle body side arm 20, the support portion 135 protrudes to a position where such non-contact can be maintained so that the bridging portion 121 does not contact the locking portion 41A of the rotating shaft 40A. Thereby, the support portion 135 can pull the bridging portion 121 vertically upward with respect to the locking portion 41A of the rotating shaft 40A and suppress the interference between the bridging portion 121 and the rotating shaft 40A.

[0050] It is desirable that the support portion 135 extends from the main body portion 131 to the space between the pair of rotating shafts 40 so that the connecting portion 121 that protrudes from the inside of the vehicle body side arm 20 toward the pair of rotating shafts 40 does not pass directly over the rotating shaft 40A (Figures 2 to 4 and 8). As a result, the support portion 135 is interposed between the connecting portion 121 and the rotating shaft 40A at any timing, whether the door is fully closed, fully open, or during door opening and closing, thereby preventing interference between the connecting portion 121 and the rotating shaft 40A.

[0051] Here, the support portion 135 supports the connecting portion 121 from vertically below, lifting it vertically upward to a position where it avoids contact with the locking portion 41A of the rotating shaft 40A. Therefore, the connecting portion 121 slides on the support portion 135 in conjunction with the opening and closing operation of the sliding door 510. Accordingly, in order to prevent the connecting portion 121 from getting caught on the support portion 135 as it slides, it is desirable to provide the support portion 135 with a horizontal surface 135a that supports the connecting portion 121 from vertically below (Figures 1 to 4, 8 and 9).

[0052] Figure 11 shows a combination of a vehicle body-side harness support member 130 without a support portion (hereinafter referred to as "vehicle body-side harness support member 130B") and a door-side harness support member 140 with a support portion 145 (hereinafter referred to as "door-side harness support member 140B"). The vehicle body-side harness support member 130B is equivalent to the vehicle body-side harness support member 130A shown earlier, with the support portion 135 removed (Figure 12). The door-side harness support member 140B is equivalent to the door-side harness support member 140A shown earlier, with the support portion 145 added (Figure 13).

[0053] The support portion 145 protrudes from the main body portion 141 of the door-side harness support member 140B toward the space between the pair of rotating shafts 40 (Figures 11 and 13). In other words, the support portion 145 protrudes from the main body portion 131 toward the vertically upward direction of the locking portion 41A of the rotating shaft 40A. Furthermore, the support portion 145 protrudes to a position where, even if the connecting portion 121, which protrudes from itself toward the pair of rotating shafts 40 inside the door-side arm 30 and loses its vertical downward support, sags under its own weight, the connecting portion 121 will not come into contact with the locking portion 41A of the rotating shaft 40A. As a result, the support portion 145 can pull the connecting portion 121 vertically upward away from the locking portion 41A of the rotating shaft 40A, thereby preventing interference between the connecting portion 121 and the rotating shaft 40A.

[0054] It is desirable that the support portion 145 extends from the main body 141 to the space between the pair of rotating shafts 40 so that the connecting portion 121 that protrudes from the inside of the door-side arm 30 toward the pair of rotating shafts 40 does not pass directly above the rotating shaft 40A (Figure 11). As a result, the support portion 145 is interposed between the connecting portion 121 and the rotating shaft 40A at any timing, whether the door is fully closed, fully open, or during door opening and closing, thereby preventing interference between the connecting portion 121 and the rotating shaft 40A.

[0055] Here, the support portion 145, like the support portion 135, supports the connecting portion 121 from vertically below, lifting it vertically upward to a position where it avoids contact with the locking portion 41A of the rotating shaft 40A. Therefore, the connecting portion 121 slides on the support portion 145 in conjunction with the opening and closing operation of the sliding door 510. Accordingly, in order to prevent the connecting portion 121 from getting caught on the support portion 145 as it slides, it is desirable to provide the support portion 145 with a horizontal surface 145a that supports the connecting portion 121 from vertically below (Figures 11 and 13).

[0056] As described above, in this embodiment, the wire harness-equipped link mechanism 1 and wire harness 110 have support portions 135 and 145 provided on at least one of the vehicle body-side harness support member 130 and the door-side harness support member 140 that support the connecting portion 121 in a position that avoids contact between the connecting portion 121 and the locking portion 41A of the rotating shaft 40A. Therefore, interference between the connecting portion 121 and the rotating shaft 40A can be suppressed at any timing, whether the door is fully closed, fully open, or during door opening and closing.

[0057] 1 Link mechanism with wire harness 10 Link mechanism 20 Body side arm 21 Arm body 22 Main wall 24 Support wall 30 Door side arm 31 Arm body 32 Main wall 34 Support wall 40, 40A Rotating shaft 41, 41A Locking part (end) 110 Wire harness 120 Harness body 121 Crossover part 130, 130A, 130B Body side harness support member 131 Main body 135 Support part 135a Horizontal surface 140, 140A, 140B Door side harness support member 141 Main body 145 Support part 145a Horizontal surface 510 Sliding door 550 First electrical connection target 560 Second electrical connection target

Claims

1. A link mechanism for moving a sliding door back and forth in the sliding direction relative to the vehicle body, and a wire harness provided with a harness body for electrically connecting a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, wherein the link mechanism comprises a vehicle body side arm installed on the vehicle body side, a door side arm installed on the sliding door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle body side arm and the door side arm, wherein the vehicle body side arm and the door side arm are each provided with an arm body having a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end, wherein one of the rotating shafts rotatably connects the respective vertically upper support walls of the vehicle body side arm and the door side arm around a vertical axis. The other rotation axis rotatably connects the respective support walls vertically downward on the vehicle body side arm and the door side arm around a vertical axis, the harness body has a connecting portion that is passed between the vehicle body and the sliding door through the pair of main walls and the pair of support walls on the vehicle body side arm and the door side arm, the wire harness comprises a vehicle body side harness support member fixed inside the arm body of the vehicle body side arm and having a main body portion that lifts the vehicle body side end of the connecting portion vertically upward and supports it from vertically downward, and a door side harness support member fixed inside the arm body of the door side arm and having a main body portion that lifts the door side end of the connecting portion vertically upward and supports it from vertically downward, A wire harness link mechanism characterized in that at least one of the vehicle body-side harness support member and the door-side harness support member is provided with a support portion that protrudes from the main body portion toward the space between the pair of rotating shafts, and supports the connecting portion from vertically below by lifting it vertically upward to a position that avoids contact between the connecting portion and the vertically upper end of the other rotating shaft.

2. The wire harness link mechanism according to claim 1, wherein the support portion extends from the main body portion to the space between the pair of rotating shafts.

3. The wire harness link mechanism according to claim 1 or 2, wherein the support portion is provided with a horizontal surface that supports the connecting portion from vertically below.

4. A wiring component for electrically connecting a first electrical connection target installed on the vehicle body and a second electrical connection target installed on the sliding door, comprising: a harness body having a connecting portion that is passed between the vehicle body and the sliding door along a link mechanism that causes the sliding door to reciprocate in the sliding direction relative to the vehicle body; a vehicle body side harness support member having a main body portion that lifts the vehicle body side end of the connecting portion vertically upward and supports it from vertically below; and a door side harness support member having a main body portion that lifts the door side end of the connecting portion vertically upward and supports it from vertically below, wherein the link mechanism comprises a vehicle body side arm installed on the vehicle body side, a door side arm installed on the sliding door side, and a pair of coaxial rotating shafts that rotatably connect one end of the vehicle body side arm and the door side arm, The vehicle body side arm and the door side arm are each provided with an arm body having a pair of main walls positioned opposite each other with a vertical gap between them, and a pair of support walls positioned opposite each other with a vertical gap between them at one end, one of which rotates to connect the vertically upper support walls of the vehicle body side arm and the door side arm so as to be rotatable around a vertical axis, the other rotating shaft connects the vertically lower support walls of the vehicle body side arm and the door side arm so as to be rotatable around a vertical axis, the connecting portion is passed between the vehicle body and the sliding door through the gap between the pair of main walls and the gap between the pair of support walls of the vehicle body side arm and the door side arm, the vehicle body side harness support member is fixed inside the arm body of the vehicle body side arm, and the door side harness support member is fixed inside the arm body of the door side arm. A wire harness characterized in that at least one of the vehicle body-side harness support member and the door-side harness support member is provided with a support portion that protrudes from the main body portion toward the space between the pair of rotating shafts, and supports the connecting portion from vertically below by lifting it vertically upward to a position that avoids contact between the connecting portion and the vertically upper end of the other rotating shaft.

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